Telephone



(No Model.) a sheets-sheet f1.

' J. H. HOWARD.

TELEPHONE.

110.471,74'5.. Patented Mar. 2-9, 1892.

TEI

WWNEEEIE.:

' SSheets-Sheet 2.

J. H. HOWARD.

`" TELEPHONE. Patented Mar. 29, 1892.

' i (No Model.)

(No Model.) s sheets-sheet s.

J. H. HOWARD.

TELEPHONE.

No. 471,745. Patented Mar. 29., 1892.

UNITED STATES YPATENT OFFICE.

JAMES H. HOWARD, OF MEDFORD, MASSl/ XCHUS'FISV TELEPHONE.

SPECIFICATION forming part of Letters Patent No. 471,745, dated March29, 1892..

Application filed September 2l, 1891. Serial No. 406,355. (No model.)

T0 all whom t may concern,.-

Be it known that l, JAMESA H. HOWARD, of Medford, -in the county ofMiddlesex and State of Massachusetts, have invented certain new anduseful Improvements in Telephones, of which the following is aspecification.

This invention relates to telephones; and it has for its objecttoprovide such improvements as will enable thev magneto-box of a telephoneto be made of a much smaller size than heretofore-a matter which is ofconsid.- erable importance in the packing and shipping of telephones forexport, as well as in domestic transmission.

A The invention also has for its object to provide an improvedconstruction and arrangementv of parts which will do away with thenecessity of making connections through the hinges of the front of thebox, thus simplifying the construction and rendering more sure theoperation of the apparatus contained in the box.

The invention also has for its object to pro vide an improved switchoperated by the weight of the receiver hungin a hook or crotch affixedto or forming a part of said switch, which shall be of simpleconstruction, eicient in use, and not liable to get out of order.

The invention consists in the improvements which I will now proceed todescribe and claim.

Of the accompanying drawings, forming a part of this specification,Figure l represents a front elevation of a telephone -box .constructedand arranged in accordance with my improvements, the front of the boxbeing removed in order to show the interior arrangements thereof. Fig. 2represents a section on line 2 2 of Fig. 1, looking toward the right.Fig. 3 represents a sectional View of a portion of the box, taken on theline 3 3 of Fig. 2. Fig. 4 represents a section on line 4 4 of Fig.

'1, looking toward the left, showing an elevation of my improveddoor-pull switch.

The same let-ters of reference indicate the same parts in all theigures.

In the drawings, a d d2 d3 represent, respectively, the top, bottom, andthe two sides of the box, and d4 represents the back of the same. A

b b represent the usual horseshoe-magnets attached to the box in theusual or any suitable way and provided with the usual shaft Z', operatedby a crank or handle b2 outside of the box, which operates the usualarmature between the lower ends of the horseshoemagnets b b. n E

A part of my improvements consists in placing the ringer-coils andringer inside of the upper portion ot' the horseshoe-magnets b b abovethe shaft b', as is best illustrated in Figs. 2 and 3.

c c represent the two coils which actuate the ringer-armature c. Thesecoils I support inside the upper portion of the horseshoemagnets b bybrackets d d, and the ringer c is supported between the ends of thecoils c c, vas usual, by a suitable bracket d', on which it is pivoted,as shown in Fig. 2.

In the drawings I haveshown the bells or gongs e e on the outside of thetop of the box; but it will be obvious that they might as well be on theoutside of the back or front of the box, the ringer c being arrangedaccordingly. I prefer the arrangement shown, however.

I do not limit myself to the form and arrangement of the brackets d d dhere shown, as the same maybe of any form which may be found suitable,and may be aflixed to any part ofthe box which may be found convenient.

By placing the bell-ringing coils c in the space inside thehorseshoe-magnets b, I obtain two advantageous results: First, Ieconomize space, as the space occupied by the magnets c above thehorseshoe-'magnets in the forms of telephones now commonly in use is notrequired in myimproved form, and the top of the box may be close to theupper end of the horseshoe-magnets, as shown in the drawings, and,secondly, I avoid the necessity of hinging the front of the box and ofmaking connection with the bell-ringing magnets c through said hinges,asin the forms now in common use, where the bell-ringing magnets areplaced on the door or front of the box. The front of the box in myimproved telephone may be screwed, hinged, or attached in any suitableway to the rest of the box, or it may be a sliding front, grooves beingprovided for it in the side pieces. This simplied construction, it willbe readily seen, is less expensive than the form now in use, andthere.is less danger of poor connection be- IOO ' tained in the box.

tween the various parts of the apparatus -con- Another simplifiedconstruction is found in my improved switch for cutting out of thecircuit the receiver when the latter is hung upon its hook. Thisconsists in a shaft or rodjadapted to slide in bearings g g on the box.Around the rod f is coiled a spring f', one end of which bears against apin or stop f2 affixed to the rod, the other end bearing on the bottomof the box or on the bearing g thereon. The springf tends to press therod fupwardly or into the box,A and said spring is made of such strengththat the weight of the receiver, when hung on a suitable hook or crotchf3. affixed to or forming part of the rod f outside of the box, willovercome said spring and will force the rod f downwardly oi' outwardlyfrom the box. I have shown the hook or crotch f3 at the lower end of therod f below the box, and I prefer this construction; but it is obviousthat the hook might project from any part of the rod f through a slot inthe side of the box and be equally operative.

At a suitable point, preferably above the bearing g, the rod fisprovided with a contact pin or piece f4, which is adapted, when thereceiver is4 on the crotch f3, to make contact with acontact spring orpiece h, and when the said receiver is removed from the crotch s and therod f moved upward by the spring f to make contact with the contactpiece or spring i, the top end of the rod f at the same time makingconnection with another contact piece or spring j. The contact-pieces71., i', and j and the rod f are connected in the usual way to the otheroperative parts of the telephone in a manner well known and understoodby those skilled in the art and not necessary to describe here, so thatwhen the receiver is on the hook and the pin]L14 in contact with thecontact-piece 7L the circuit will be closed from one line-wire throughthe ringer-coils and over the other line-wire, cutting out the otherparts, and that when the receiver is removed from the crotch and the pinf4 and rod f come, respectively, into contact with the contact-piecesandj and break contact with the piece h the receiver and microphone willbe included in the circuit and the horseshoe-magnets and bell-ringingmagnets cut out. Y

' It will be seen that, my improved door-pull switch, operated by theweight of the receiver, is extremely simple in construction and certainin operation.

I claiml. A telephone having the bell-ringing or rin ger-actuating coilsor magnets arranged inside of the curve of the horseshoe-magnets, as setforth. y

2. In a telephone, the combination of the horseshoe-magnets, theringer-actuating magnets or coils arranged inside of the curve of saidhorseshoe-magnets, and the ringer extending out from between saidhorseshoemagnets, as set forth.

3. In a switch operated bythe weight of a telephone-receiver, thecombination, with a vertically-movable spring-supported rod providedwith a crotch at its lower end for the reception of the said receiverand having a beveled upper end and alateral projection f4 at apointbelow said upper end, of the spring contact-pieces j and i, arranged tomake a sliding contact wit-h'the said beveled upper end of the rod fandthe said projection f4, respectively, when said rod is in a raisedposition, and the contact spring-piece h, arranged to make a sliding contact with the said projection when the said rod is in its loweredposition, and electrical connections with the said spring contact-piecesand the verticallymovable rod, as set forth.

4. In a telephone, thecombination, with the horseshoe-magnets', and theringer-actuating magnets located inside of the curve of saidhorseshoe-magnets, of the door-pull switch operated by the weight of thereceiver to cut out said receiver when the same is hung upon it and tocut out said magnets when the recei ver is removed from it, as setforth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, this 81st day ot' August, A. D.1891.

JAMES II. HOVARD.

Witnesses:

ARTHUR W.' ORossLEY, A. D. HARRISON.

